<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>v-bind</title>
    <script src="https://cdn.jsdelivr.net/npm/vue/dist/vue.js"></script>
    <style>
        .active{
            border: 1px solid red;
        }
    </style>
</head>
<body>
    <div id="app">
        <img v-bind:src="imgSrc" alt="">
        <br>
        <img :src="imgSrc" alt="" :title="imgTitle+'嘿嘿'" :class="isActive?'active':''" @click="toggleActive">
        <br>
        <img :src="imgSrc" alt="" :title="imgTitle+'嘿嘿'" :class="{active:isActive}" @click="toggleActive">


    </div>

    <script>
        var app = new Vue({
            el:"#app",
            data:{
                imgSrc:"test.jpg",
                imgTitle:"不错",
                isActive:false

            },
            methods:{
                toggleActive:function(){
                    this.isActive = !this.isActive;
                }

            }

        })
    </script>
    
</body>
</html>